A piece of material is assigned a call number according to the Library of Congress Classification Outline. Class M is for music. Below are some of the most useful call numbers to know.
Solo with piano:
Two stringed instruments: M286-287
One stringed and one wind instrument: M290-M291
One stringed and one plucked instrument: M294-295
Piano trios (piano, violin or viola, and violoncello): M312
String trios: M349-353
String quartets: M452-454
String quintets: M550-M554
Solo instrument with orchestra:
Bowed string instrument techniques: MT259-338
Systems and methods: MT20-34
Did you know that there are two different interfaces to search the UMD catalog?
There is this Worldcat interface that you are probably familiar with:
And there is the "Classic Catalog" interface:
In order to search by call number and browse items that are on the shelf electronically you will need to use the Classic Catalog.
By using the Classic Catalog you can immediately narrow your search to call numbers:
Here is what the search results look like when searching the call number range M237-238: